Finding the Fourth Proportional to 70,446.96, 105,539.76 and 50,415.12

Step by Step Solution

1. Step 1: Write the proportion equation
   70,446.96 : 105,539.76 = 50,415.12 : x
2. Step 2: Convert to fraction form
   70,446.96/105,539.76 = 50,415.12/x
3. Step 3: Cross multiply
   70,446.96x = 105,539.76 × 50,415.12
4. Step 4: Simplify right side
   70,446.96x = 5,320,799,665.17
5. Step 5: Solve for x
   x = 5,320,799,665.17/70,446.96
6. Step 6: Final answer
   x = 75,529.16